20393940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{823}}^1$

素因数の和:901

約数の個数: 96

約数和(自身を含む): 66447360

約数和(自身を除く): 46053420

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 59, 60, 70, 84, 105, 118, 140, 177, 210, 236, 295, 354, 413, 420, 590, 708, 823, 826, 885, 1180, 1239, 1646, 1652, 1770, 2065, 2469, 2478, 3292, 3540, 4115, 4130, 4938, 4956, 5761, 6195, 8230, 8260, 9876, 11522, 12345, 12390, 16460, 17283, 23044, 24690, 24780, 28805, 34566, 48557, 49380, 57610, 69132, 86415, 97114, 115220, 145671, 172830, 194228, 242785, 291342, 339899, 345660, 485570, 582684, 679798, 728355, 971140, 1019697, 1359596, 1456710, 1699495, 2039394, 2913420, 3398990, 4078788, 5098485, 6797980, 10196970, 20393940]

約数ペア:

[(1, 20393940), (2, 10196970), (3, 6797980), (4, 5098485), (5, 4078788), (6, 3398990), (7, 2913420), (10, 2039394), (12, 1699495), (14, 1456710), (15, 1359596), (20, 1019697), (21, 971140), (28, 728355), (30, 679798), (35, 582684), (42, 485570), (59, 345660), (60, 339899), (70, 291342), (84, 242785), (105, 194228), (118, 172830), (140, 145671), (177, 115220), (210, 97114), (236, 86415), (295, 69132), (354, 57610), (413, 49380), (420, 48557), (590, 34566), (708, 28805), (823, 24780), (826, 24690), (885, 23044), (1180, 17283), (1239, 16460), (1646, 12390), (1652, 12345), (1770, 11522), (2065, 9876), (2469, 8260), (2478, 8230), (3292, 6195), (3540, 5761), (4115, 4956), (4130, 4938)]